The Blackbutt Granny Flat Floor Plan

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 Posted on Google  
 
  
 
 
 Drew & Tamara Coulthard 
 
28 July 2025
 
 
 Trustindex verifies that the original source of the review is Google. 
We had a superb experience when Mark and his team built a custom designed garage and upstairs ancillary accommodation from our drafted plans.  The project was delivered quite quickly in a very tight access space with minimal disruption to our backyard.  Nothing was too much trouble as we changed a few things during the build.  The tradespeople were all lovely, trustworthy, quality and professional.  We would definitely look to Mark if we were to do a similar build again in the future.  Thank you team for a great experience and putting us at ease for what can be a very stressful exercise.
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 Elad Feldman 
 
28 July 2025
 
 
 Trustindex verifies that the original source of the review is Google. 
+5
Hallmark did a great job building our granny flat. Mark was fantastic to deal with—honest, reliable, and made the whole process easy. The build was high quality and finished on time. Would happily recommend them to anyone!
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 belinda o 
 
28 July 2025
 
 
 Trustindex verifies that the original source of the review is Google. 
We couldn't be happier with the experience we had with Hallmark Developments for our home addition. From start to finish, their quality of work was outstanding, with every detail handled meticulously. Mark and his team were extremely professional, always keeping us informed and providing honest advice that made the process smooth and worry-free. They were also impressively prompt, completing the project on time without cutting corners. It's rare to find a company that combines such high-quality craftsmanship with transparency and efficiency. We highly recommend Hallmark Developments to anyone looking for a reliable and skilled builder!"
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 Fran 
 
26 June 2025
 
 
 Trustindex verifies that the original source of the review is Google. 
Had Mark build a large custom granny flat, from start to finish was amazing. Nothing was an issue and easy to work with.
Highly recommend build to anyone thinking of putting an addition on their property Thank you mark wonderful job!
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 Murray Woodington 
 
2 April 2025
 
 
 Trustindex verifies that the original source of the review is Google. 
Outstanding experience.  From 1st consultation to handover we've been more than impressed with the first class service and attention to detail delivered by Mark and the team.
We now have two amazing spaces to enjoy the wonderful West Oz lifestyle.
  
 
 
 
 
 
 Posted on Google  
 
  
 
 
 Lolly Evans 
 
2 October 2024
 
 
 Trustindex verifies that the original source of the review is Google. 
A personalized, professional experience during these build works from Mark and his team. What we thought would be a nightmare at the back yard with noise, drilling, digging and more, turned out to be a fun experience with his team as we communicated, chatted, drank coffee or tea on the freezing days and just shared opinions about the growth of the works as they happened.

Mark and team were always open to suggestions and feedback as works progressed, and this made the entire experience smooth running, to deadline, with a super quality finish, exceeding our expectations.. Thanks Hallmark!. Well done- John and Lauretta.
  
 
 
 
 
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